Detector for wireless telegraphy.



C. O. LORENZ.

DETECTOR FOR WIRELESS TELEGRAPHY. APPLICATION FILED APR. 30. 1914.

1 ,159,969. Patented Nov. 9, 1915.

I 614101 new 3 CHARLES 0. LORENZ, OF PORT ARTHUR, TEXAS.

DETECTOR FOR WIRELESS TELEGRAPHY.

Specification of Letters Patent.

Patented Nov, 9, 11915.

Original application filed November 7, 1910, Serial No. 591,130. Dividedand this application filed. April 30, 1914. Serial No. 835,498.

To all whom it may concern:

Be it known that 1, CHARLES O. LORENZ, a citizen of the United States,residing at Port Arthur, in the county of Jefferson and State of Texas,have invented certaln new and useful Improvements in Detectors forWireless Telegraphy, of which the following is a specification.

This application isa division of'my application filed November 7, 1910,Serial No. 591,130, and relates to a detector for use in high frequencyelectrical signaling systems, and particularly to the so-called mineralsor substances employed for making electrical contact as well as to thedevices in which the minerals are mounted and through means of whichthey are manipulated to vary the contact.

T he minerals employed and which I have found in practice to givesuperior results are a combination of copper and sulfur knowncommercially as chalcobite, containing about 79. 7}; of copper and 20.2%of sulfur; also a combination of zinc and oxygen known commercially aszinkite and consisting of about 80.3% of zinc and 19.7% of oxygen. Thesetwo minerals are mounted in the respective cups or holders in positionto be brought into contact one with another. The mechanism for mountingthe min erals or, contact substances in adjustable relation,contemplates the use of means for adjusting the two contacts to and fromeach other; resilient means through which they are made to press oneupon the other, with adjustment for varying such pressure at will andmaintaining substantially the desired pressure notwithstandin' otheradjustments in the contacts; means Ior roughly adjusting the contacts inthe plane of their impingement, so that any part of one may be caused tocontact with any part of the other; and means for effecting a fineadjustment in their plane of impingement, whereby the range of variationin contact points is correspondingly increased.

The invention also contemplates a cut-out switch through which to shuntthe detector with reference to the receiving circuit.

The invention will be fully understood upon reference to theaccompanying drawings, in which a v Figures 1, 2 and 3 are,respectively, a top plan view, a front elevation, and a side view of adetector constructed in accordance with my invention.

1 represents a base having mounted thereon a block 2 carrying a fixedarm 8 and a pivotally mounted arm 4:. The arms 3 and 4 carry thecontacts, and in order that the pressure throughwhich the contacts" bearone upon the other may be varied at will, arm 4 is mounted upon a pivot5 and provided at one end with a pressure spring 6 exerting itsinfluence upon the arm through means of a set screw 7 that may beadjusted at will. The arms 3 and 4: are provided with disks 8 and 9,respectively, adapted to be rotated upon their true axes; the disk 8being carried by a shaft 10 having a rotating head 11 and beingpreferably threaded so as to serve the combined purpose of rotating thedisk 8 and moving said disk bodily in the direction of its axis. Thedisk 9 is mounted by means of a circumferential groove 12 receiving theforks 13 that are carried by the pivoted arm a and is thus maderotatable on the arm which carries it, though without bodily adjustmentrelatively to the arm. The disks 8 and 9 have eccentrically mounted inthem, mineral cups 1i and 15. respectively; cup 1% being preferablysupplied with chalcocite by soldering it therein. and the cup 15 beingpreferably supplied with Zinkite which may be held in place by means ofthe set screw lb.

The cups l-t and 15 are held in place-by means of the shanks or pins 17,18, which adapt them to rotate upon their own axes; the shank 18 beingalso adjustable axially to move cup 15 toward or away from the cup Afterbringing the minerals into impingement by adjustment of the shaft 10 andthe pin 18., they may be given any desired relative adjustment in theplane of impingement, and caused to bring any point on either of theminto contact with any point on the other, through means of the orbitalmovement which each cup has by the rotation of the disk on which it ismounted. followed by a rotation of either or both cups on their own trueaxes. These adjustments do not effect material change in the pressurewith which one bears against the other, be cause this is regulated bythe spring 6 and screw i. This spring also permits of slight ceive anexternal wire from the inductance in the system, While binding post 24is connected to contact 22 and is intended to receive a Wire from oneside of the condenser and receivers in the system, while binding post 25is connected to the other side of the receivers and to the condenser.When the switch arm 19 is upon the contacts'21, 22, the detector iscompletely shunted from the receiving circuit.

While I have described certain minerals which I prefer to use because ofsuperior results obtained thereby, and certain mechanism to be employedfor holding" the minerals in operative relation to each other, I desireit understood that I do not limit myself to the use of these features incombination, as either may be used independently of the other or incombination with some suitable substitute.

I claim:- 1. A detector comprising a body of chalcecitg electricallycontacting with a conducting bo y.

2. A. detector comprising a body of chalcocite, and a body of zinkiteelectrically contacting therewith.

3. In a detector, a body comprising a copnuisance per sulfid inelectrical contact with a frag= 4Q ment of zinkite. v

4:. In a detector, the combination. of a pair of mineral bodies inelectrical contact, one of said bodies comprising a copper sulfid.

5. In a receiver for electro -magnetic waves, the combination of a-pairof oppositely disposed cups, an adjusting rod secured to one of saidcups and adapted to impart a rotatable and reciprocahle movementthereto, a rotatable disk, wherein said rod is eccentrically mounted,wherebythe cup and its adjusting rod may be rotated about the axis ofsaid disk, and resiliently controlled means supporting said disk, andnormally forcing said'cup into proximity of the 0pposed cup.

6. In a receiver for electromagnetic waves, the combination of a pair ofoppo sitely disposed cups, an adjusting rod se- .cured to one of saidcups and adapted to impart a. rotatable and reciprocable movementthereto, a rotatable disk, wherein said CHARLES O. LURENZ.

In presence of two witnesses: Heavier S. Kmenr, EDWIN S. CLARnsoN.

